Following Saturday’s FA Cup fifth round thriller with Chelsea, Phil Parkinson had urged his side to “reel in” Hull as his side resumed their quest to earn a fourth successive promotion.
However, following a low-key start, Wrexham’s sloppiness in testing conditions allowed Jakirovic’s side to play on the front foot.
Cody Drameh’s deflected shot looped on to the roof of the net before Josh Windass was well denied by Ivan Pandur with the home side’s first opening at the other end.
But shortly after Zak Vyner’s deflected shot looped over the crossbar, the game exploded into life.
Callum Doyle was penalised for a foul on Charlie Hughes just outside the Wrexham penalty area, and Gelhardt spectacularly curled into the top corner five minutes before half time.
The striker was presented with an even better opportunity to double the Tigers’ lead just four minutes later after being brought down by Doyle in the box.
However, the Leeds United loanee was superbly denied by Okonkwo from the penalty spot as Wrexham kept themselves in the contest ahead of the second half.
The Red Dragons – who sent on Ollie Rathbone in place of Vyner – lifted the tempo after the restart, but struggled to trouble Pandur.
They had Okonkwo to thank once again for keeping the score at just 1-0 after he kept out Liam Millar’s shot after the Canadian had been picked out by Koumas.
After the roles were reversed from the resulting corner, Hull did manage to double their lead though as Millar’s curling cross was nodded into the net by Wales international Koumas.
Having been blunt in attack for the vast majority of the game, Wrexham threw everything at Hull late on.
Substitute Issa Kabore’s cross was turned into the net by Broadhead in the 76th minute to give the home faithful hope.
They carved out a fine opporfunity to equalise late on as debutant Bailey Cadamarteri crossed to fellow substitute Jay Rodriguez, although the striker could only head wide as Wrexham’s three-game winning streak in the Championship ended.